Cant get archived app to work!!!!!!

Question

archived all 49 class files using:
'jar cvf Tutorial.jar Tutorial.class Tutorial$1.class' ........etc
goes fine.
Then I create a text file called 'mainClass', containing the text:
Main-Class: Tutorial
,then add this to the manifest file, using:
jar cmf mainClass.txt Tutorial.jar Tutorial.class
goes fine!! Then I try and run the app using:
java -jar Tutorial.jar
then get the error message:
'failed to load Main-Class manifest attribute from Tutorial.jar'
Dont know what the h*ll im doing wrong....been trying it for hours!! - been following the JAR tutorial on the sun website......Am i doing something basic wrong.....??
cheerz :)

Answer 1

ok.....got it working.....
....its a bit stupid tho! I unpacked the jar file, and it only ended up unpacking the main class file Tutorial.class. All the other 48 class files I had archived just didnt seem to be in there! So I re-archived it with the new meta file, and had to specify all the bloomin 49 class files again!! ..there must be an easier way?
.surely there is a program that can just read in a java file, then compile it and then archive it!!.....jbuilder can probably do it, but I cant even get my java file to compile in it!!....is there a simple, free program??!!
glad i got it workin tho!!
cheerz